Tariq Jahan's press conference in Winson Green

“The police were using me to quell the riots, they put me up on a platform and used me to promote non-violence.

“My mistake was I had faith in the justice system. I expected to get justice, all I got was a slap in the face.”

He added: “You try and talk to these same people, they don’t have time, they don’t want to know, they don’t care.

“Maybe Khalid Kiyani is a scapegoat being used because he’s now retired. And no-one else is being blamed for the incompetence of the police force.

“Where were all the senior officers, why were there no notes made, why are bits and pieces of information missing?”

Assistant West Midlands Police Chief Constable Gary Cann said: “Once again, I along with the rest of the force extend our deepest sympathies to the family and friends of the deceased who continue to grieve for their loved ones.

“The independent investigation shows that no officer from West Midlands Police deliberately misled the trial at Birmingham Crown Court.

“The investigation found that, in trying to encourage witnesses to come forward to help the triple murder investigation, Khalid Kiyani offered eye-witnesses immunity from prosecution for public order offences.

“This is clearly outside of the remit of any police officer and as the IPCC state, was a reckless act.

“Mr Kiyani compulsorily left the force in 2012 as a result of the A19 regulations that required officers with 30 years’ service to retire and therefore cannot be the subject of any police disciplinary proceedings.”